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HP Compaq Business Desktop dc7100 sff - Fan Activity at 100 Percent

Issue:
Intermittent fan activity at 100 percent speed from all three fans (CPU, chassis and power supply fan) can occur and are NOT related to any motherboard or power supply issues.
Mainboard and/or power supply replacement will not solve the problem and therefore should not be applied.
The problem is caused by the thermal sensor, that is connected together with the power switch assembly.
Even if the problem seems to be intermittent, when wiggling the cable that connects the power switch cable, the problem can be reproduced and the fan speed rises up to 100 percent of speed.
Solution
Replace the power switch/LED cable assembly Part Nr. 368387-001 to fix the problem. Click the link to go to HP PartSurfer at URL: http://partsurfer.hp.com/cgi-bin/spi/main

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